protista Meaning, Definition & Usage
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noun eukaryotic one-celled living organisms distinct from multicellular plants and animals: protozoa, slime molds, and eukaryotic algae
division Protista.
WordNet
Pro*tis"ta noun plural
Etymology
NL., fr. Gr.Definitions
(Zoöl.) A provisional group in which are placed a number of low microscopic organisms of doubtful nature. Some are probably plants, others animals.